Magazine-boiler



(No Model.) 4 Sheets-Sheet 1.

A. H. FOWLER.

I MAGAZINE BOILBR. No. 307,284. Patented 0013.28, 1884.

Ziff-- nun-mm WITNBSSES;

TQRNEYS.

(No Model.) 4 sheets-sheet 2.'

A. H. POWLER.

MAGAZINE BOILER.

UUUUJUUUU WITNESSES (No Model.)

4'Sheets-Sheet 3. A.' H. FOWLER. i

` MAGAZINE'BOILBR.. Y BT08017284. Patented Oct. 28, 1884.

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4 Sheets Sheet 4.

(No Model.) A. H. FOWLER. MAGAZINE BOILER.

` No. 307,284. Patented Oot. 28, 1884.

WITNBSSES .Unire raras! Paritair trice ARTHUR H. FOWLER, OF NEWARK, OHIO.

MAGAZINE-BOILER.

"SPFGEFICATEQN forming part or Letters Patent No. 307,284-, dated Qctober 28, 1884.

Application filed February QS), 1884. (No model.)

To all whom it' may concern.:

Be it known that l, ARTHUR H. FOWLER, a citizen of the United States, and a resident 0f Newark, in the county of Licking and State of Ohio, have invented certain new and useful improvements in Magazine-Boilers; and I do hereby declare that the following is a full, clear, and exact description ofthe invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specitication, and in which- Figure l is a vertical sectional view of my improved magazine-boiler. Fig. 2 is a similar view of the same, taken at right angles to Fig. l, and showing a slight modification of the same. Figs. 3 and 4 are horizontal sections on lines x x and y y, Fig. l. Fig. 5 is a detail view of one of the joints of the outer jacket or casing. Figs. 6 and 7 are detail Views of the mechanism for shaking and dumping the grate, and Figs. 8 and 9 are a vertical and a horizontal sectional view, respectively, of the steam-trap.

Similar letters of reference indicate corresponding parts in all the figures.

My invention has relation to magazine-boilers or generators; and it consists in the improved construction and combination of parts of the same, as hereinafter more fully described and claimed.

In the accompanying drawings, the letterA indicates the shell ofthe boiler, the upper head, B, of which forms a hanged aperture, C, to which the upper endn ofthe outer niagazine, D, is secured. The lower end ofthe magazine is secured to the central hanged aperture, E, of the top of the furnace F,.which has a laterally-extending opening, G, provided With a door through which the fire may be observed.

H is an outer shell or jacket, which surrounds the boiler, leaving a space, I, between it and the boiler, into which the chimney or smoke-stack J opens near its upper end, and the upper head of this jacket forms a central hanged aperture, K, which is provided with a lid or cover, L, which may be removed for the purpose of iilling the magazine. The upper end of the magazine has a laterally-extending tube, M, through which all gas created in the magazine may be conveyed into the smoke-chamber or space between the boiler and the outer jacket. The outer jacket consists of two shells, NN, with an interposed layer, O, of a non-conducting material, and the joints or connecting-seams for the edges, of the sheets forming the shells is shown in Fig. 5, and consists of two angle-irons, P, each riveted with its base-flange Q, to the edges of the inner sheets, having the edges of the outer sheets bolted or riveted to the outer portions of their outwardly-proj ectiug flanges, R, which anges are bolted together.

S indicates the updraft-flues, which are secured with their lower ends in the top or crown sheet of the furnace, while their upper ends open in the floor or bottom 0f two smokechambers, T, which each extends nearly half` way around inside the boiler-shell, and the downdraft-tubes U extend from the floors of these chambers to the lower annularhead, V, of the boiler, which extends around thelower end ot' the furnace at the upper end of the ash-pit W, the downdraft-flues opening in the lower end of the smoke-chamber surrounding the boiler. rlhe inner walls of the upper smoke-chambers are curved to conform to the circumferences of the updraft-flues, thus allowing` free upward passage for the steam formed below them, andthe chambers are each provided with an outward] y-eXtending casing, X, which extends out through the outer jacket, and is provided with a door, Y, providing access to the draft-dues for the purpose of cleaning them, or for'other similar purposes.

The grate Z is composed of so-called herring-bone77 grate-bars A', the ends of which are pivoted in bearings in a rim, C', of the grate, and are provided upon their lower sides with downwardlv-projecting arms or lugs D', which are hinged to a transverse bar, E', to the middle of which is hinged the lower end of a crank, F', upon the inner end of a shaft, G', having a lever or handle, H', and rocking in a tube, I', which rocks in bearings J', in

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at its upper end, may be secured inside the outer magazine, forming an annular space between the walls of' the two magazines, for the purpose of feeding` two different kinds of coal, as shown in Fig. 2. The steanrpipe P' opens in the head of theboiler, and for the purpose of preventing water from rushing up in the pipe by high steampressure, or by lively boiling, I provide a steam-trap, Q', consisting of' a lower cupshaped casing, It', having a flange upon its upper edge, to which the flange S', of' an upper cup-shaped easing, T', is secured, the mouth of which upper casing is smaller than the mouth of' the lower casing, forming a shoulder, U', against which the rim of a valve or disk, V', bears, which valve is provided with a row of' perforatious, XV', near its outer edge. 'Ihe upper side of the valve has a central upwardly-projecting rod, X', which slides in a bearing, Y', in a transverse bar, Z', in the upper casing, and is provided with a spiral spring, A", which is wrapped around the rod or stem, bearing against the upper side of the valve and against the bearing in thek transverse bar. Ihe under side of the valve is provided with a conical inverted cup, B", which projects downward to near the opening of the steam-pipe, flaring beyond the said opening, and it will be seen that when water rushes up in the pipe it will be collected in the cup, and force by its greater resistance the valve upward, closing the space between the rim of' the valve and the shoulder or seat, which the spring under normal circumstances will keep open, the water being deflected by the cup, while the steam will pass through the apertures in the valve, whereupon, when the water has ceased to pass up in the pipe, the spring will again force the valve downward, allowing the steam to pass around.. the edges of the valve, as well as through the perforations.

It will be seen that as coal is filled into the magazine and fire built in the furnace, the smoke and other products of combustion will pass up through the updraft-flues into the upper smoke-chambers, from which it will pass downward through the downdraft-flues into the lower portion of the outer smokechamloer, in which it passes upward and out through the smoke-stack, the heat thus boiling the water around the fines and the cham-A bers, and thereupon giving oft' heat to the outer shell of the boiler, thus heating the water and superheating the steam in the steamchamber above the water;

It will be seen that the grate may be shaken by means of the handle or lever upon the crank-shaft, and that the entire grate may be tilted, dumping the ashes and cinders thereupon by tilting the lever upon the tube.

I Vhen the inner magazine is used hard coal is filled in the annular space between the inner magazine and the outer magazine, and -soft coal is filled in the inner magazine, which will cause the soit coal to f'eed into the fire in the center, while the hard-coal fire will surround it, the smoke and soot created bythe soft coal being carried through the hardcoal fire, and thus being consumed, which will do away with the drawback connected with the use of soft coal-viz., the soot and smoke-'an d givin g the advantage of' the lower price and greater heating properties, as well as the last-ing capacity, of the soft coal.

Having thus described my invention, I claim and desire to secure by Letters Patent of the United Stat-esl. The upper smoke-chambers in a magazine steam-boiler of the vdescribed construction, having its inner walls curved to conform to the circumferences of the draft-dues, as and for the purpose shown and set forth.

2. rIhe `joint for a hollow nonconducting shell for boilers or similar objects, eonsisting of two flanged angle-irons, having the edges of the inner shell bolted to their baseiianges, and having the edges of' the outer shell riveted to the outwardly-projeeting flanges, and having the outwardly-projecting flanges secured together by means of bolts, as and for the purpose shown and set forth.

3. rIhe combination ofthe boiler,having the central magazine, the up and down draft fines, and the smoke-chambers, having the flues opening into them at a distance from their inner sides, and having the said inner sides curved to conform to the inner curves of the draft-tubes, asand for the purpose shown and set forth.

In testimony that I claim the foregoing as my own I have hereunto affixed my signature in presence of two witnesses.

ARTHUR H. FOWLER.

Witnesses:

ORLANDO Bonanni?, W'. D. OHERINGTON.

IDO 

